-er -ey a-a a-b aaa aab aae aak aao aap aar aas aay ab- aba abb abe abk abo abp abr abs aby aea aeb aee aek aeo aep aer aes aey aka akb ake akk ako akp akr aks aoa aob aoe aok aoo aop aor aos ap- apa apb ape apk apo app apr aps apy ar- ara arb are ark aro arp arr ars ary as- asa asb ase ask aso asp asr ass asy ay- aya aye ayk ayo ayp ayr ays b-p baa bab bae bak bao bap bar bas bay bba bbb bbe bbk bbo bbp bbr bbs bby be- bea beb bee bek beo bep ber bes bey bka bkb bke bkk bko bkp bkr bks boa bob boe bok boo bop bor bos boy bpa bpb bpe bpo bpp bpr bps bpy bra brb bre brk bro brp brr brs bry bsa bsb bse bsk bso bsp bsr bss bsy by- bya bye byk byo byp byr bys eaa eab eae eak eao eap ear eas eba ebb ebe ebk ebo ebp ebr ebs eby eea eeb eee eek eeo eep eer ees eey eka ekb eke eko ekp ekr eks eky eo- eoa eob eoe eok eoo eop eor eos ep- epa epb epe epo epp epr eps era erb ere erk ero erp err ers ery es- esa esb ese esk eso esp esr ess esy eya eye eyo eyp eyr eys ka- kaa kab kae kak kao kap kar kas kay kba kbb kbe kbk kbo kbp kbr kbs ke- kea keb kee kek keo kep ker kes key kkb kke kkk kkp kkr kks kky koa kob koe kok koo kop kor kos koy kpa kpe kpk kpo kpp kpr kps kra krk kro krp krr krs kry ksa ksb kse ksk kso ksp ksr kss kya kye kyo kyp kyr kys oaa oab oae oak oao oap oar oas ob- oba obb obe obk obo obp obr obs oby oea oeb oee oeo oep oer oes oey oka okb oke okk oko okp okr oks oo- ooa oob ook ooo oop oor oos op- opa opb ope opk opo opp opr ops opy or- ora orb ore ork oro orp orr ors ory os- osa osb ose osk oso osp osr oss oya oye oyo oys p-p paa pab pae pak pao pap par pas pay pba pbb pbe pbk pbo pbp pbr pbs pby pea peb pee pek peo pep per pes pey pka pkb pke pko pkp pkr pks pky poa pob poe pok poo pop por pos poy ppa ppb ppe ppk ppo ppp ppr pps pra prb pre prk pro prp prr prs pry ps- psa psb pse psk pso psp psr pss psy py- pya pyb pye pyk pyo pyr pys ra- raa rab rae rak rao rap rar ras ray rba rbb rbe rbk rbo rbp rbr rbs re- rea reb ree rek reo rep rer res rey rkb rke rkk rko rkp rks rky roa rob roe rok roo rop ror ros roy rpa rpb rpe rpk rpo rpp rpr rps rra rrb rrk rrp rrr rrs rsa rsb rse rsk rso rsp rsr rss ry- rya rye ryk ryo ryr rys ryy saa sab sae sak sao sap sar sas say sba sbb sbe sbk sbo sbp sbr sbs sby se- sea seb see sek seo sep ser ses sey sk- ska skb ske skk sko skp skr sks sky soa sob soe sok soo sop sor sos soy spa spb spe spk spo spp spr sps spy sr- sra srb sre srk sro srp srr srs sry ss- ssa ssb sse ssk sso ssp ssr sss sy- sya syb sye syk syp syr sys yaa yab yae yak yao yap yar yas yay ybe ybp ybr ybs yby yea yeb yee yek yeo yep yer yes yey yka ykk yob yoe yok yoo yop yor yos yoy ypa ypo yps yra yre yro yrp yrs ysa ysb yse ysk yso ysp ysr yss ysy yyb yye yys yyy